WO2021238472A1 - Panneau d'affichage et son procédé de fabrication, et appareil d'affichage - Google Patents

Panneau d'affichage et son procédé de fabrication, et appareil d'affichage Download PDF

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Publication number
WO2021238472A1
WO2021238472A1 PCT/CN2021/087092 CN2021087092W WO2021238472A1 WO 2021238472 A1 WO2021238472 A1 WO 2021238472A1 CN 2021087092 W CN2021087092 W CN 2021087092W WO 2021238472 A1 WO2021238472 A1 WO 2021238472A1
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Prior art keywords
electrode
emitting layer
light
electrodes
electrode block
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PCT/CN2021/087092
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English (en)
Chinese (zh)
Inventor
张浩瀚
刘佳
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京东方科技集团股份有限公司
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Priority to US17/772,851 priority Critical patent/US20220392969A1/en
Publication of WO2021238472A1 publication Critical patent/WO2021238472A1/fr

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/805—Electrodes
    • H10K50/82—Cathodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/1201—Manufacture or treatment
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
    • H10K59/65—OLEDs integrated with inorganic image sensors
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass

Definitions

  • the present disclosure relates to the field of display technology, and in particular to a display panel, a manufacturing method thereof, and a display device.
  • the screen-to-body ratio refers to the ratio of the screen area of the display to the area of the entire front of the display.
  • the display screen is designed as a special-shaped display with a groove area (Notch area), such as notch screen, water drop screen, etc.
  • the groove area can be equipped with display sensors, such as cameras, light sensors, etc., to increase the screen occupancy Compare.
  • the above-mentioned special-shaped display screen is not a true "full screen", and the groove area of the display screen cannot be displayed, which reduces the screen-to-body ratio.
  • the senor is arranged under the display screen, for example, a camera is placed under the display screen, so that the area of the display screen above the sensor can realize both the sensing function and the display, thereby increasing the screen-to-body ratio.
  • a display panel has a first area and a second area. Both the first area and the second area include a plurality of sub-pixel areas, and the sub-pixel distribution density in the first area is smaller than the sub-pixel distribution density in the second area.
  • the display panel includes a substrate, a plurality of first electrodes, a plurality of light-emitting layers, a plurality of second electrodes, and a plurality of scan signal lines and a plurality of data signal lines.
  • the plurality of first electrodes are disposed on the substrate and located in the first region, and the first electrodes extend along a first direction; the first electrodes include a plurality of first electrode blocks.
  • the multiple light-emitting layers are arranged on a side of the multiple first electrodes away from the substrate, and one light-emitting layer is located in a sub-pixel area; the orthographic projection of the light-emitting layer on the substrate is located on the first side of the substrate.
  • An electrode block is within the orthographic projection range on the substrate.
  • the plurality of second electrodes are arranged on a side of the plurality of light-emitting layers away from the substrate, the second electrodes extend along a second direction, and the first direction intersects the second direction;
  • the two electrodes include a plurality of second electrode blocks, one second electrode block covers a light-emitting layer, any two adjacent second electrode blocks in the second electrode overlap at the edges that are close to each other;
  • Direction, the plurality of second electrode blocks in the second electrode are arranged in a staggered manner.
  • the plurality of scan signal lines and the plurality of data signal lines are arranged on the substrate, one scan signal line connects the plurality of first electrode blocks in one of the first electrodes in series, and one data signal The wire is coupled to one of the second electrodes.
  • the geometric center of the second electrode block does not coincide with the geometric center of the light-emitting layer; the orthographic projection of the light-emitting layer covered by the second electrode block on the substrate is different from the The orthographic projection of the second electrode block overlapped by the second electrode block on the substrate has no overlap.
  • the second electrode block has a first edge and a second edge.
  • the second edge of the second electrode block overlaps the second electrode block adjacent to the second electrode block, and the first edge of the second electrode block overlaps the second electrode block adjacent to the second electrode block.
  • the blocks are roughly free of overlap.
  • between the side of the light-emitting layer close to the first edge of the second electrode block and the first edge The distance between the light-emitting layer and the second edge of the second electrode block is a first distance, and the distance between the side of the light-emitting layer close to the second edge of the second electrode block and the second edge is a second distance, and the first distance is smaller than the second distance. spacing.
  • the width of the overlapping portions of two adjacent second electrode blocks is less than or equal to the difference between the second pitch and the first pitch.
  • the second electrode block in the orthographic projection of the second electrode block, the light-emitting layer covered by it, and the second electrode block overlapping it on the substrate, the second electrode block overlapping it
  • the distance between the side close to the light-emitting layer and the edge of the light-emitting layer is equal to the distance between the first edge of the second electrode block and the edge of the light-emitting layer.
  • the first pitch is 10 ⁇ m to 12 ⁇ m
  • the second pitch is 16 ⁇ m to 20 ⁇ m
  • the width of the portion overlapping with the adjacent second electrode block in the second electrode block is 6 ⁇ m to 8 ⁇ m .
  • the shape of the orthographic projection of the second electrode block on the substrate, the shape of the orthographic projection of the light-emitting layer on the substrate, and the shape of the first electrode block on the substrate is the same; the shape of the orthographic projection of the second electrode block on the substrate is a quadrilateral or a hexagon.
  • the line connecting the geometric centers of the two second electrode blocks overlapping with one second electrode block is parallel or substantially parallel to the second direction;
  • the connecting direction of the geometric centers of the two second electrode blocks is an acute angle with the first direction.
  • any two adjacent second electrode blocks overlap each other with the same width.
  • the plurality of light-emitting layers includes a first-color light-emitting layer, a second-color light-emitting layer, and a third-color light-emitting layer.
  • the luminescence of the plurality of luminescent layers covered by each of the first electrodes is The colors are the same; in the area where each of the second electrodes is located, the first color light emitting layer, the second color light emitting layer, and the third color light emitting layer are sequentially arranged circularly and staggered.
  • the plurality of second electrode blocks in the second electrode are divided into a plurality of electrode block groups, and each electrode block group includes six second electrode blocks overlapped in sequence.
  • the distance between the geometric centers of the two light-emitting layers of the same color in the second direction is equal to that in the area where the first electrode is located , The distance between the geometric centers of two adjacent light-emitting layers of the same color in the first direction.
  • the scan signal line includes a first line segment and a second line segment coupled to the first line segment.
  • the first line segment extends in the first direction, and the second line segment extends in the second direction; the first line segment connects a plurality of first electrode blocks in the first electrode in series.
  • the plurality of second line segments in the plurality of scan signal lines are respectively located on opposite sides of the plurality of first electrodes in the first direction.
  • a first electrode of any two adjacent first electrodes is coupled to a second line segment in a scan signal line located on one side of the plurality of first electrodes; any phase The other first electrode of the two adjacent first electrodes is coupled to a second line segment of a scan signal line located on the other side of the plurality of first electrodes.
  • the scan signal line includes a first line segment and a second line segment coupled to the first line segment.
  • the first line segment extends in the first direction, and the second line segment extends in the second direction; the first line segment connects a plurality of first electrode blocks in the first electrode in series.
  • the plurality of second line segments of the plurality of scan signal lines are located on one side of the two opposite sides of the plurality of first electrodes in the first direction.
  • the plurality of scan signal lines and the plurality of data signal lines are arranged in the same layer and have the same material.
  • the plurality of data signal lines are located on a side of the plurality of second electrodes away from the second region in the second direction.
  • a display device in another aspect, includes: a display panel and a driving chip as described in any of the above embodiments.
  • the driving chip is bound to the display panel, and is coupled to a plurality of data signal lines in the display panel.
  • the preparation method includes:
  • a plurality of first electrodes are formed on the side of the plurality of scan signal lines away from the substrate; the first electrodes extend in a first direction; one of the first electrodes is coupled to one scan signal line;
  • a plurality of second electrodes are formed on the side of the plurality of light-emitting layers away from the substrate; the second electrodes extend in a second direction, and one of the second electrodes is coupled to one data signal line; the second The electrode includes a plurality of second electrode blocks, one second electrode block covers a light-emitting layer, and any two adjacent second electrode blocks in the second electrode overlap at the edges that are close to each other; along the second direction , The plurality of second electrode blocks in the second electrode are arranged in a staggered manner.
  • the plurality of light-emitting layers includes a first-color light-emitting layer, a second-color light-emitting layer, and a third-color light-emitting layer;
  • the second electrode includes:
  • the second electrode block of the third color light-emitting layer overlaps the second electrode block covering the first color light-emitting layer and the second electrode block covering the second color light-emitting layer at the edges that are close to each other. catch.
  • FIG. 1 is a structural diagram of a display panel according to some embodiments
  • FIG. 2 is another structural diagram of a display panel according to some embodiments.
  • Fig. 3 is a cross-sectional view of the display panel in Fig. 2 along the A-A' direction;
  • FIG. 4 is another structural diagram of a display panel according to some embodiments.
  • FIG. 5 is another structural diagram of a display panel according to some embodiments.
  • FIG. 6 is a structural diagram of a display device according to some embodiments.
  • FIG. 7 is a flow chart of preparing a display panel according to some embodiments.
  • FIG. 8 is another preparation flow chart of the display panel according to some embodiments.
  • 9A-9F are diagrams of various steps of a method of manufacturing a display panel according to some embodiments.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include one or more of these features.
  • plural means two or more.
  • the expressions “coupled” and “connected” and their extensions may be used.
  • the term “connected” may be used when describing some embodiments to indicate that two or more components are in direct physical or electrical contact with each other.
  • the term “coupled” may be used when describing some embodiments to indicate that two or more components have direct physical or electrical contact.
  • the term “coupled” or “communicatively coupled” may also mean that two or more components are not in direct contact with each other, but still cooperate or interact with each other.
  • the embodiments disclosed herein are not necessarily limited to the content of this document.
  • the exemplary embodiments are described herein with reference to cross-sectional views and/or plan views as idealized exemplary drawings.
  • the thickness of layers and regions are exaggerated for clarity. Therefore, variations in the shape with respect to the drawings due to, for example, manufacturing technology and/or tolerances can be envisaged. Therefore, the exemplary embodiments should not be construed as being limited to the shapes of the regions shown herein, but include shape deviations due to, for example, manufacturing.
  • the etched area shown as a rectangle will generally have curved features. Therefore, the areas shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shape of the area of the device, and are not intended to limit the scope of the exemplary embodiments.
  • AMOLED Active Matrix Organic Light Emitting Diode, Active Matrix Organic Light Emitting Diode
  • AMOLED Active Matrix Organic Light Emitting Diode
  • the signal transmittance is low. Therefore, when a sensor (such as a camera, etc.) is placed under the display panel, the effect of under-screen sensing is not good.
  • the area where the sensor is arranged adopts PMOLED (Passive matrix organic light emitting diode) technology to improve the transmittance of the area.
  • PMOLED Passive matrix organic light emitting diode
  • a plurality of spacer pillars are formed in the area, so as to disconnect the entire surface covering the area during the process of forming the cathode by the vapor deposition process.
  • the cathode film layer thereby forming a plurality of strip-shaped cathodes.
  • An embodiment of the present disclosure provides a display panel 100.
  • the display panel 100 has a first area L and a second area H.
  • Each of the first area L and the second area H includes a plurality of sub-pixel areas P.
  • one sub-pixel area P emits light of one color.
  • the color of the light emitted by a sub-pixel area P is red light, or green light, or blue light.
  • the second area L may be located on at least one side of the first area H, or the first area H may surround the second area L.
  • the distribution density of sub-pixels in the first area L is smaller than the distribution density of sub-pixels in the second area H.
  • a sensor such as a camera, etc., may be provided under the first area L in the display panel 100 to realize the off-screen sensing technology.
  • the display panel 100 includes a substrate 101, a plurality of first electrodes 110, a plurality of light emitting layers 130, a plurality of second electrodes 120, a plurality of scan signal lines SL, and a plurality of data signal lines DL.
  • the plurality of first electrodes 110 are disposed on the substrate 101 and located in the first region L.
  • the first electrode 110 extends in the first direction X.
  • the first electrode 110 includes a plurality of first electrode blocks 111.
  • the plurality of light-emitting layers 130 are disposed on the side of the plurality of first electrodes 110 away from the substrate 101.
  • One light-emitting layer 130 is located in one sub-pixel area P. That is, one sub-pixel region P is provided with one light-emitting layer 130.
  • the orthographic projection of the light-emitting layer 130 on the substrate 101 is within a range of the orthographic projection of a first electrode block 111 on the substrate 101.
  • the size of the orthographic projection of the light-emitting layer 130 on the substrate 101 can be regarded as the size of the light-emitting area of the sub-pixel, that is, the edge of the orthographic projection of the light-emitting layer 130 on the substrate 101 is the sub-pixel's edge. The edge of the light emitting area.
  • the plurality of second electrodes 120 are arranged on the side of the plurality of light-emitting layers 130 away from the substrate 101.
  • the second electrode 120 extends along the second direction Y, and the first direction X crosses the second direction Y.
  • the first direction X is perpendicular to the second direction Y.
  • the second electrode 120 includes a plurality of second electrode blocks 121, one second electrode block 121 covers one light-emitting layer 130, and any two adjacent second electrode blocks 121 in the second electrode 120 are close to each other. Overlap at the edges.
  • the plurality of second electrode blocks 121 in the second electrode 120 are arranged in a staggered manner.
  • the above-mentioned dislocation arrangement means that in the second direction Y, the geometric centers of the plurality of second electrode blocks 121 in the second electrode 120 are not completely on a straight line, that is, along the second direction Y , The geometric centers of the second electrode blocks 121 in the second electrode 120 are sequentially connected, and the line formed by the connection is a broken line as a whole.
  • a line connecting the geometric center of the second electrode block 121 and the geometric center of a second electrode block 121 adjacent to the second electrode block 121 intersects the second direction Y,
  • the line connecting the geometric centers of the two second electrode blocks 121 that are most adjacent to the second electrode block 121 is parallel to the second direction Y.
  • adjacent second electrode blocks need to be coupled through a connection pattern.
  • the second electrode includes a plurality of second electrode blocks, and also includes a second electrode block located between two adjacent second electrode blocks.
  • a plurality of second electrode blocks are arranged at intervals, and a space for forming the connection pattern needs to be left between two adjacent second electrode blocks.
  • the area where the second electrode is located includes most of the second electrode.
  • the area where the second electrode block is located also includes areas where multiple connection patterns are located.
  • two adjacent second electrode blocks 121 in the second electrode 120 overlap, that is, there is no space between two adjacent second electrode blocks 121.
  • the second electrode 120 is located The area only includes the area where the plurality of second electrode blocks 121 are located. Therefore, the display panel 100 does not need to provide a connection pattern between two adjacent second electrode blocks 121, which reduces the gap between two adjacent second electrode blocks 121. The size of the space.
  • the display panel 100 of the present disclosure reduces the area of the area where the second electrode 120 is located in the first area L, and reduces the number of second electrodes 120 in the first area L.
  • the ratio of the occupied area also reduces the ratio of the area occupied by the plurality of second electrodes 120 in the display panel 100, so that the area of the first area L not covered by the second electrodes 120 is increased, and the first area L is increased.
  • the transmittance of the display panel 100 is improved. In this way, when a sensor (for example, a camera, etc.) is arranged in the first area L, it is advantageous for the sensor to receive signals (for example, the camera takes light), so that a better under-screen sensing effect can be achieved.
  • the adjacent second electrode in the second electrode In the case where the blocks are spaced and need to be coupled through the connection pattern, the area of the area not covered by the second electrode in the first area occupies about 25% of the area of the display panel, while the area of the first area L in the present disclosure is not covered by the second electrode.
  • the area of the area covered by the second electrode 120 accounts for about 41% of the area of the display panel 100. Therefore, the embodiment of the present disclosure can improve the transmittance of the display panel 100.
  • the display panel 100 of the present disclosure may use a mask to directly evaporate and form the second electrode 120 including the plurality of second electrode blocks 121. Therefore, the display panel 100 of the present disclosure 10 does not need to be provided with an isolation column. In this way, when a camera is arranged below the first area L in the display panel 100, interference of light passing through the isolation column can be avoided to cause glare from the camera. Phenomenon, improve the camera's imaging effect. In addition, in the process of preparing the display panel 100 in the process, there is no need to form isolation pillars before forming the second electrode 120, thereby reducing the production process and improving the production efficiency.
  • a plurality of scan signal lines SL and a plurality of data signal lines DL are all disposed on the substrate 101.
  • One scan signal line SL connects a plurality of first electrode blocks 111 in one first electrode 110 in series, and one data signal line DL is coupled to one second electrode 120.
  • the first electrode 110 is an anode
  • the second electrode 120 is a cathode
  • the scan signal line SL is configured to transmit a scan signal to the first electrode 110
  • the data signal line DL is configured to transmit a data signal to the second electrode 120 to control the position between the first electrode 110 and the second electrode 120.
  • the light-emitting layer 130 in between emits light.
  • the second electrode 120 in the display panel 100 provided by the embodiment of the present disclosure includes a plurality of second electrode blocks 121, one second electrode block 121 covers one light-emitting layer 130, and any two of the second electrodes 120 are adjacent to each other.
  • the second electrode blocks 121 overlap at edges that are close to each other, and along the second direction Y, the plurality of second electrode blocks 121 in the second electrode 120 are arranged in a staggered manner.
  • the adjacent second electrode blocks 121 in the second electrode 120 are overlapped, and no additional connection pattern is required.
  • the area of the area where the second electrode 120 is located is reduced and reduced.
  • the ratio of the area occupied by the plurality of second electrodes 120 in the first region L is reduced, that is, the ratio of the area occupied by the plurality of second electrodes 120 in the display panel 100 is reduced, thereby improving the transparency of the first region L.
  • the pass rate also increases the transmittance of the display panel 100. In this way, when a sensor (such as a camera, etc.) is arranged in the first area L, a better under-screen sensing effect can be achieved.
  • the display panel 100 can use a mask in the process to directly evaporate to form the second electrode 120 including a plurality of second electrode blocks 121, without the need to provide isolation columns, which reduces the production process, improves the production efficiency, and avoids The interference of light passing through the isolation column causes the camera under the display panel 100 to produce glare, which improves the imaging effect of the camera.
  • the geometric center (O2) of the second electrode block 121 does not coincide with the geometric center (O1) of the light-emitting layer 130.
  • the orthographic projection of the light-emitting layer 130 covered by the second electrode block 121 on the substrate 101 and the orthographic projection of the second electrode block 121 overlapping the second electrode block 121 on the substrate 101 have no overlap.
  • the distances from the edges of the second electrode block 121 to the edges of the light-emitting layer 130 are not completely equal.
  • the part of the second electrode block 121 that does not cover the light-emitting layer 130 has enough space for overlapping with the adjacent second electrode block 121.
  • other second electrode blocks 121 overlapped with the second electrode block 121 will not cover the light-emitting layer 130 covered by the second electrode block 121, which can avoid the uneven thickness of the second electrode 120 covering the light-emitting layer 130.
  • the normal light emission of the light-emitting layer 130 is affected.
  • the second electrode block 121 has a first edge A1 and a second edge A2.
  • the second edge A2 of the second electrode block 121 overlaps with the second electrode block 121 adjacent to the second electrode block 121.
  • first edge A1 and the second edge A2 are adjacent, in the actual overlap process, if the second edge A2 of the second electrode block 121 is opposite to the second electrode block 121 If the adjacent second electrode block 121 overlaps, the first edge A1 of the second electrode block 121 will inevitably overlap with the second electrode block 121 adjacent to the second electrode block 121, but the first edge A1 is The length of the overlapped part of the edge is very small compared to the length of the overlapped part of the second edge A2. Therefore, the present disclosure considers that the first edge A1 of the second electrode block 121 is adjacent to the second electrode block 121 The second electrode block 121 is substantially free of overlap.
  • the length of the overlapped part of the second edge A2 may account for 100%, 80%, 60%, etc. of the total length of the second edge A2.
  • the distance between A1 is a first distance a
  • the distance between a side of the light-emitting layer 130 close to the second edge A2 of the second electrode block 121 and the second edge A2 is a second distance b
  • the first distance a is smaller than the second distance a. Spacing b.
  • the second electrode block 121 and the light-emitting layer 130 covered by it line up In the orthographic projection on the bottom 101, the area between the side of the light-emitting layer 130 that is close to the second edge A2 of the second electrode block 121 and the second edge A2 has a larger space, which can facilitate the placement of the second electrode block 121 Connect the second electrode block 121 adjacent to the second electrode block 121 to prevent other second electrode blocks 121 overlapping the second electrode block 121 from covering the light-emitting layer 130 covered by the second electrode block 121, thereby avoiding The normal light emission of the light-emitting layer 130 is affected.
  • the width w of the overlapping portion of two adjacent second electrode blocks 121 is less than or equal to the difference between the second interval b and the first interval a.
  • the distance between the overlapping portion and the light-emitting layer 130 is not zero. In this way, other second electrode blocks 121 overlapping with one second electrode block 121 can be prevented from covering the light-emitting layer 130, which affects the normal light emission of the light-emitting layer 130.
  • the distance c between the side of the second electrode block 121 close to the light emitting layer 130 and the edge of the light emitting layer 130 is equal to the first distance a.
  • the second electrode block 121 can be made to align with the first electrode 120 in each direction of the edge of the light-emitting layer 130 covered by the second electrode block 121.
  • the allowable overlap offset range of the second electrode block 121 overlapped by the two electrode blocks 121 is approximately equal, that is, for example, two second electrode blocks 121 overlapped with one second electrode block 121, two second electrode blocks
  • the overlap offset of one second electrode block 121 in 121 is close to the overlap offset of the other second electrode block 121, so that the distribution of the second electrode blocks 121 is more uniform.
  • any two adjacent second electrode blocks 121 overlap each other with the same width. In this way, the second electrode blocks 121 in the display panel 100 can be evenly distributed.
  • the first pitch a is 10 ⁇ m to 12 ⁇ m
  • the second pitch b is 16 ⁇ m to 20 ⁇ m
  • the width of the portion overlapping with the adjacent second electrode block 121 in the second electrode block 121 is 6 ⁇ m to 8 ⁇ m.
  • the first pitch a is 11 ⁇ m
  • the second pitch b is 18 ⁇ m
  • the width of the portion of the second electrode block 121 overlapping with the adjacent second electrode block 121 is 7 ⁇ m.
  • the shape of the orthographic projection of the second electrode block 121 on the substrate 101 is the same as the shape of the orthographic projection of the light-emitting layer 130 on the substrate 101.
  • the shape of the orthographic projection of the first electrode block 111 on the substrate 101 is the same as the shape of the orthographic projection of the light-emitting layer 130 on the substrate 101.
  • the shape of the orthographic projection of the second electrode block 121 on the substrate 101 is a quadrilateral (as shown in FIG. 4), a hexagon (as shown in FIG. 5), a circle or an ellipse, or the like.
  • the line (q1) between the geometric centers (O2) of the two second electrode blocks 121 overlapping with one second electrode block 121 is connected to The second direction Y is parallel or substantially parallel.
  • the angle of the line (q2) between the geometric centers (O2) of any two adjacent second electrode blocks 121 and the first direction X is an acute angle.
  • the acute angle ranges from 30° to 60°, for example, the acute angle is 45°.
  • the included angle with the first direction X is approximately zero or parallel to the second direction Y.
  • the angle between the connecting direction of the geometric centers of the two connected second electrode blocks 121 and the first direction X is an acute angle, which can reduce the area of the orthographic projection of the second electrode 120 on the substrate 101 and save the second electrode
  • the spatial size of 120 increases the transmittance of the display panel 100.
  • the plurality of light emitting layers 130 include a first color light emitting layer 131, a second color light emitting layer 132, and a third color light emitting layer 133.
  • the first color, the second color, and the third color are three primary colors, for example, the first color, the second color, and the third color are red, green, and blue, respectively.
  • the multiple light-emitting layers 130 covered by each first electrode 110 have the same light emission color.
  • the first-color light-emitting layer 131, the second-color light-emitting layer 132, and the third-color light-emitting layer 133 are sequentially arranged cyclically and in a staggered arrangement.
  • the line connecting the geometric centers of the second color light emitting layer 132 and the third color light emitting layer 133 that are closest to the first color light emitting layer 131 Parallel to the second direction Y.
  • the geometric centers of the light-emitting layers 130 are sequentially connected, that is, the first-color light-emitting layer 131, the second-color light-emitting layer 132, and the third-color light-emitting layer 133 are sequentially connected.
  • the geometric center of, the line formed by the connection is in the shape of a broken line as a whole.
  • the geometric centers of the light-emitting layers of the same color are sequentially connected, and the line formed by the connection is in the shape of a broken line as a whole.
  • the multiple light-emitting layers 130 are formed on the side away from the substrate 101.
  • the electrode blocks 121 in the second electrode 120 covering the light-emitting layers 130 may be arranged in a staggered manner.
  • the light-emitting area of the first color light-emitting layer 131, the second color light-emitting layer 132, and the third color light-emitting layer 133 can be adjusted according to actual needs.
  • the ratio of the area occupied by the pixel area is adjusted, which is not limited here. In this case, when the light-emitting area of each light-emitting layer 130 is adjusted, the area of the second electrode block 120 will also be adjusted accordingly.
  • the plurality of second electrode blocks 121 in the second electrode 120 are divided into a plurality of electrode block groups 1201, and each electrode block group 1201 includes six sequentially overlapping second electrodes. Block 121.
  • the distance between the geometric centers of the two light-emitting layers 130 of the same color in the second direction Y is equal to that in the area where the first electrode 110 is located , The distance between the geometric centers of two adjacent light-emitting layers 130 of the same color in the first direction X.
  • the light-emitting layer 130 covered by the six second electrode blocks 121 in the electrode block group 1201 is a first-color light-emitting layer 121, a second-color light-emitting layer 132, and a third-color light-emitting layer in order. 132, the first color light emitting layer 121, the second color light emitting layer 132, and the third color light emitting layer 132.
  • the distance between the geometric centers (O1) of the two first-color light-emitting layers 131 is v1
  • the distance between the geometric centers (O1) of the two second-color light-emitting layers 132 is v2
  • two The distance between the geometric centers (O1) of the third color light-emitting layer 133 is v3.
  • the geometric centers (O1) of two adjacent first-color light-emitting layers 131 The distance in the first direction X is h1; when the light-emitting layer 130 covered by the first electrode 110 is the second-color light-emitting layer 132, in the area where the first electrode 110 is located, two adjacent second-color The distance between the geometric center (O1) of the light-emitting layer 132 in the first direction X is h2; when the light-emitting layer 130 covered by the first electrode 110 is the third-color light-emitting layer 133, in the area where the first electrode 110 is located Inside, the distance between the geometric centers (O1) of two adjacent third-color light-emitting layers 133 in the first direction X is h3.
  • the first color light emitting layer 131, the second color light emitting layer 132, and the third color light emitting layer 133 in the first region L are all uniformly distributed. In this way, the uniformity of the display screen of the display panel 100 can be ensured.
  • the scan signal line SL includes a first line segment L1 and a second line segment L2 coupled to the first line segment L1.
  • the first line segment L1 extends in the first direction X
  • the second line segment L2 extends in the second direction Y.
  • the first line segment L1 connects a plurality of first electrode blocks 111 in the first electrode 110 in series.
  • the geometric centers of a plurality of first electrode blocks 111 coupled to a first line segment L1 are sequentially connected, and the extension direction of the connection is the same as the extension direction of the first line segment L1, that is, it extends along the first direction X.
  • the scan signal transmitted by the scan signal line SL can be normally transmitted to the multiple sub-pixels located in the area where one first electrode 110 is located, so as to control the light emission of the multiple sub-pixels.
  • the display panel 100 further includes an insulating layer disposed between the first electrode 110 and the scan signal line SL.
  • a plurality of via holes are disposed on the insulating layer, and the first electrode block 111 is coupled to the first line segment L1 through the via holes. .
  • the plurality of second line segments L2 in the plurality of scan signal lines SL are respectively located on opposite sides of the plurality of first electrodes 110 in the first direction X (as shown in FIG. 2). It can be understood that, since the scan signal line SL is in the process of transmitting signals, there is a voltage drop on the scan signal line SL. In this case, the plurality of scan signal lines SL in the display panel 100 can be moved from the first direction X respectively. The two opposite sides of the ⁇ 2 transmit scanning signals to the plurality of first electrodes 110, thereby improving the uniformity of the display.
  • the plurality of second line segments L2 in the plurality of scan signal lines SL are located on one side of the plurality of first electrodes 110 on opposite sides in the first direction X (not shown in the figure). In this way, the wiring of the display panel 100 can be facilitated.
  • any One of the two adjacent first electrodes 110 is coupled to a plurality of second line segments L2 in a scan signal line SL located on one side of the plurality of first electrodes 110, and any two adjacent first electrodes 110 are The other first electrode 110 of the one electrode 110 is coupled to a plurality of second line segments L2 in a scan signal line SL located on the other side of the plurality of first electrodes 110.
  • an odd number of first electrodes 110 are coupled to a plurality of second line segments L2 in a scan signal line SL located on one side of the plurality of first electrodes 110, and an even number of first electrodes 110 is coupled to a plurality of second line segments L2 in a scan signal line SL located on the other side of the plurality of first electrodes 110.
  • the plurality of second line segments L2 in the plurality of scan signal lines SL located on opposite sides of the plurality of first electrodes 110 in the first direction X alternately transmit scan signals to the plurality of first electrodes 110 , So that along the second direction Y, the plurality of first electrodes 110 receive scan signals one by one.
  • the multiple scan signal lines SL and the multiple data signal lines DL are arranged in the same layer and have the same material. In this way, a plurality of scan signal lines SL and a plurality of data signal lines DL can be formed synchronously, thereby simplifying the production process.
  • the material of the plurality of scan signal lines SL and the material of the plurality of data signal lines DL may each include a metal material, for example, molybdenum (Mo), copper (Cu), aluminum (Al), and the like.
  • the plurality of data signal lines DL are located on a side of the plurality of second electrodes 120 away from the second region H in the second direction Y. In this way, it is possible to prevent the multiple data signal lines DL from affecting the size of the area where the display panel 100 performs normal display, and increase the area of the area where the display panel 100 performs normal display.
  • An embodiment of the present disclosure provides a display device 200.
  • the display device 200 includes a display panel 100 and a driving chip 201 as in any of the foregoing embodiments.
  • the driving chip 201 is bound to the display panel 100 and is coupled to a plurality of data signal lines DL in the display panel 100.
  • the driving chip 201 is configured to provide data signals to a plurality of data signal lines DL.
  • the driving chip 201 is an integrated circuit (Integrated Circuit, IC).
  • the data signal line DL may be used as a pin for coupling the second electrode 120 and the driving chip 201.
  • a plurality of scan signal lines SL may also be coupled to the driving chip 201 (as shown in FIG. 6), and the driving chip 201 is also configured to provide scan signals to the plurality of scan signal lines SL.
  • the plurality of scan signal lines SL may be coupled to a driving circuit provided on the substrate 101, and the driving circuit is configured to provide scan signals to the plurality of scan signal lines SL.
  • the present disclosure is not limited here.
  • the above-mentioned display device 200 may be any device that displays images, whether in motion (e.g., video) or fixed (e.g., still images), and regardless of text or images. More specifically, it is expected that the described embodiments can be implemented in or associated with a variety of electronic devices, such as (but not limited to) mobile phones, wireless devices, and personal data assistants (PDAs).
  • PDAs personal data assistants
  • Handheld or portable computers GPS receivers/navigators, cameras, MP4 video players, camcorders, game consoles, watches, clocks, calculators, TV monitors, flat panel displays, computer monitors, car monitors (e.g., Odometer display, etc.), navigator, cockpit controller and/or display, camera view display (for example, the display of a rear-view camera in a vehicle), electronic photos, electronic billboards or signs, projectors, building structures, packaging And aesthetic structure (for example, a display of the image of a piece of jewelry), etc.
  • the display device 200 has the same beneficial effects as the above-mentioned display panel 100, which will not be repeated here.
  • the embodiment of the present disclosure provides a method for manufacturing the display panel 100 in any of the above-mentioned embodiments, as shown in FIG. 7, including the following steps:
  • a plurality of scan signal lines SL and a plurality of data signal lines DL are formed in the first region L of the substrate 101.
  • the display panel 100 includes a pixel driving circuit and a data line coupled to the pixel driving circuit provided in each sub-pixel region of the second region H, a plurality of scan signal lines SL and a plurality of data lines
  • the signal line DL and the data line have the same layer and the same material, that is, a plurality of scan signal lines SL and a plurality of data signal lines DL are formed synchronously with the data lines.
  • a plurality of first electrodes 110 are formed on the side of the plurality of scan signal lines SL away from the substrate 101, the first electrodes 110 extend along the first direction X, and one first electrode 110 and one scan The signal line SL is coupled.
  • the material of the first electrode 110 may include a metal material (for example, silver (Ag), etc.) or a transparent conductive material (for example, indium tin oxide (ITO), etc.).
  • a metal material for example, silver (Ag), etc.
  • a transparent conductive material for example, indium tin oxide (ITO), etc.
  • the plurality of first electrodes 110 may be formed by a patterning process.
  • the patterning process may include film formation, exposure, development, and etching processes.
  • an insulating layer can be formed on the side of the plurality of scan signal lines SL away from the substrate 101, and the material to be formed for the first electrode 110 can be deposited on the side of the insulating layer away from the substrate 101 to form a conductive film.
  • the surface of the film on the side away from the substrate 101 is coated with photoresist.
  • the conductive film is removed except for the region where the first electrode 110 is to be formed, and the photoresist, to obtain a photoresist.
  • the first electrode 110 of the first electrode block 111 may include film formation, exposure, development, and etching processes.
  • a plurality of light-emitting layers 130 are formed on the side of the plurality of first electrodes 110 away from the substrate 101.
  • a pixel defining layer may be formed on the side of the first electrode 110 away from the substrate 101.
  • the pixel defining layer includes a plurality of opening regions, and the openings in the pixel defining layer The area defines the light emitting area of each sub-pixel P.
  • One light-emitting layer 130 is located in one opening area.
  • the embodiment of the present disclosure ignores this.
  • the edge of the orthographic projection of the light-emitting layer 130 on the substrate 101 will be larger than the edge of the opening area in the pixel defining layer, that is, the light-emitting layer
  • the area of 130 is larger than the light-emitting area of the sub-pixel P. Therefore, the edge of the light-emitting layer 130 described in the embodiment of the present disclosure is the edge of the light-emitting area of the sub-pixel P.
  • a plurality of second electrodes 120 are formed on the side of the plurality of light-emitting layers 130 away from the substrate 101, the second electrodes 120 extend along the second direction Y, one second electrode 120 and one data signal line DL Coupling; the second electrode 120 includes a plurality of second electrode blocks 121, a second electrode block 121 covers a light-emitting layer 130, any two adjacent second electrode blocks 121 in the second electrode 120 at the edges close to each other Overlapping; Along the second direction Y, a plurality of second electrode blocks 121 in the second electrode 120 are arranged in a staggered manner.
  • the material of the second electrode 120 may include a metal material (such as silver (Ag), aluminum (Al), magnesium (Mg), etc.) or a transparent conductive material (such as indium tin oxide (ITO), etc.).
  • a metal material such as silver (Ag), aluminum (Al), magnesium (Mg), etc.
  • a transparent conductive material such as indium tin oxide (ITO), etc.
  • the second electrode 120 has a plurality of second electrode blocks 121, one second electrode block 121 covers one light-emitting layer 130, and any two of the second electrodes 120 are adjacent to each other.
  • the two second electrode blocks 121 overlap at the edges that are close to each other, and along the second direction Y, the plurality of second electrode blocks 121 in the second electrode 120 are arranged in a staggered manner.
  • the adjacent second electrode blocks 121 in the second electrode 120 are directly overlapped without forming a connection pattern, which reduces the production process, improves the production efficiency, and reduces the area where the second electrode 120 is located.
  • the proportion of the area occupied by the plurality of second electrodes 120 in the display panel 100 is reduced, thereby increasing the transmittance of the display panel 100.
  • a sensor such as a camera, etc.
  • the display panel 100 does not need to form an isolation column, which reduces the production process, improves production efficiency, and avoids the interference of light passing through the isolation column, which causes the glare phenomenon of the camera below the display panel 100, and improves the performance of the camera. Camera effect.
  • the plurality of light emitting layers 130 include a first color light emitting layer 131, a second color light emitting layer 132 and a third color light emitting layer 133.
  • Forming a plurality of second electrodes 120 on the side of the plurality of light-emitting layers 130 away from the substrate 101, as shown in FIG. 8, includes the following steps:
  • Electrode block 121 Using a mask, as shown in FIG. 9D, the material of the second electrode 120 to be formed is vapor-deposited on the side of the first color light-emitting layer 131 away from the substrate 101 to form a second color light-emitting layer 131 covering the first color light-emitting layer 131. Electrode block 121.
  • the material of the second electrode 120 to be formed is vapor-deposited on the side of the third color light-emitting layer 133 away from the substrate 101 to form a second layer covering the third color light-emitting layer 133.
  • the vapor deposition process is adopted to form multiple second electrode blocks 121 in the second electrode 120 by moving a mask multiple times without replacing the mask, reducing production costs, shortening production time, and improving Increased production efficiency.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

L'invention concerne un panneau d'affichage, comprenant : un substrat, une pluralité de lignes de signal de balayage et une pluralité de lignes de signal de données sur le substrat, et une pluralité de premières électrodes, une pluralité de couches électroluminescentes et une pluralité de secondes électrodes dans une première région. Chacune des premières électrodes s'étendant dans une première direction comprend une pluralité de premiers blocs d'électrode. Les couches électroluminescentes sont situées dans une région de sous-pixel ; une projection orthographique, sur le substrat, de chacune des couches électroluminescentes se situe dans la plage d'une projection orthographique, sur le substrat, de chacun des premiers blocs d'électrode ; chacune des secondes électrodes s'étendant dans une seconde direction, qui coupe la première direction, comprend une pluralité de seconds blocs d'électrode ; les seconds blocs d'électrode recouvrent les couches électroluminescentes ; et deux seconds blocs d'électrode adjacents quelconques dans la seconde électrode se chevauchent au niveau de bords proches l'un de l'autre. Dans la seconde direction, la pluralité de seconds blocs d'électrode dans la seconde électrode sont disposés en quinconce. Une ligne de signal de balayage connecte la pluralité de premiers blocs d'électrode dans la première électrode en série, et une ligne de signal de données est couplée à la seconde électrode.
PCT/CN2021/087092 2020-05-29 2021-04-14 Panneau d'affichage et son procédé de fabrication, et appareil d'affichage WO2021238472A1 (fr)

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CN111599848B (zh) * 2020-05-29 2021-12-03 京东方科技集团股份有限公司 显示面板及其制备方法、显示装置

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